Running your own comes with responsibilities:
Unlike traditional email services like Gmail or Outlook, these scripts don't require passwords or registration. They listen for incoming SMTP traffic, capture the messages, and display them on a web interface—deleting everything after a set period. Why Use or Build a Disposable Email Service?
Do you need help setting up or bypassing port restrictions? Share public link
Firewalls must allow external traffic on port 25 (SMTP) and port 3000 (API). Run the following commands on a standard Ubuntu Linux firewall:
def save_db(db): with open(DATA_FILE, 'w') as f: json.dump(db, f) temp mail script
: Use a script like GentleSource Temporary Email to create a web-based disposable email site.
Your preferred (In-memory, Redis, PostgreSQL, MySQL)?
# Example usage: Send an email send_email(temp_email, 'Test Email', 'Hello, this is a test email.')
const express = require('express'); const mongoose = require('mongoose'); const app = express(); app.use(express.json()); app.use(express.urlencoded( extended: true )); // Connect to MongoDB mongoose.connect('mongodb://localhost:2017/tempmail'); // Define Schema with an automatic 1-hour expiration (TTL index) const EmailSchema = new mongoose.Schema( createdAt: type: Date, default: Date.now, expires: 3600 , recipient: String, sender: String, subject: String, bodyHtml: String, ); const Email = mongoose.model('Email', EmailSchema); // Inbound webhook from mail parser app.post('/api/inbound', async (req, res) => try const recipient, sender, subject, 'body-html': bodyHtml = req.body; const newEmail = new Email( recipient: recipient.toLowerCase(), sender, subject, bodyHtml ); await newEmail.save(); res.status(200).send('Success'); catch (error) res.status(500).send('Internal Server Error'); ); // API to fetch messages for a specific generated address app.get('/api/mailbox/:address', async (req, res) => const messages = await Email.find( recipient: req.params.address.toLowerCase() ).sort( createdAt: -1 ); res.json(messages); ); app.listen(3000, () => console.log('Temp Mail Server running on port 3000')); Use code with caution. Step 3: Designing the Frontend UI Do you need help setting up or bypassing port restrictions
This script will:
A basic script works, but you can add power‑user features:
Depending on your programming preferences and performance requirements, you can build a temp mail script using several ecosystems:
: Block outbound SMTP traffic from your server completely. Your script should only receive mail, never send it. This keeps your IP off blacklists. Your preferred (In-memory, Redis, PostgreSQL, MySQL)
$stmt = $pdo->prepare("INSERT INTO temp_emails (mailbox_id, sender, subject, body, received_at) VALUES (?, ?, ?, ?, NOW())"); $stmt->execute([$mailbox['id'], $sender, $subject, $body]); ?>
mailparser : Converts complex, raw MIME emails into clean JavaScript objects.
Developers use temp mail scripts to test user registration flows without creating dozens of real accounts.